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Assignment #___ What I need to know about Genetics(1)
2) Mutation(2) and sexual reproduction lead to genetic variation in a
population.
a. Meiosis(3) is an early step in sexual reproduction in which the
pairs of chromosomes(4) separate and segregate(5) randomly
during cell division to produce gametes(6) containing one
chromosome of each type.
b. Only certain cells in a multicellular(7) organism undergo
meiosis.
c. Random chromosome segregation explains the probability that a
particular allele(8) with be in a gamete(9).
d.
e. Approximately half of an individual’s DNA sequence comes
from each parent.
f. The role of chromosomes in determining an individual’s sex(10).
g. How to predict the possible combinations of alleles in a
zygote(11) from the genetic makeup of the parents.
3) A multicellular organism develops from a single zygote, and its
phenotype(12) depends on its genotype(13), which is established at
fertilization(14).
a. How to predict the probable outcome of phenotypes in a genetic
cross from the genotypes of the parents and mode of inheritance
(autosomal(15) or X-linked, dominant(16) or recessive(17)).
b. The genetic basis for Mendel’s laws(18) of segregation and
independent assortment.
4) Genes(19) are a set of instructions encoded in the DNA sequence of
each organism that specify the sequence of amino acids in proteins
characteristic of that organism.
a. The general pathway by which ribosomes synthesize proteins,
using tRNAs(20) to translate genetic information in mRNA(21).
b. How to apply the genetic coding rules to predict the sequence of
amino acids from a sequence of codons(22) in RNA.
D:\886459063.doc
6/20/2017 5:02 AM
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Assignment #____ Write definitions for each of the 22 words
1. Genetics(1)
2. Mutation(2
3. Meiosis(3)
4. chromosomes(4)
5. segregate(5)
6. gametes(6)
7. multicellular(7)
8. allele(8)
9. gamete(9).
10. sex(10).
11. zygote(11)
12. phenotype(12)
13. genotype(13),
14. fertilization(14).
15. autosomal(15)
16. dominant(16)
17. recessive(17)
18. Mendel’s laws(18)
19. Genes(19)
20. tRNAs(20)
21. mRNA(21).
22. codons(22)
D:\886459063.doc
6/20/2017 5:02 AM